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James Whitworth
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9414. Whitworth, J. May 7. Firebars for endless-chain grates for boiler furnaces, of the kind described in Specification No. 9067, A.D. 1841. The ribs b at the sides of the bars are inclined to the axis of the bar, their lower edges being rounded off as shown.
GB190109414D1901-05-071901-05-07Improvements in or applicable to the Furnaces of Steam Boilers
ExpiredGB190109414A
(en)